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#1 2006-12-06 04:13:50
- Neha
- Member
- Registered: 2006-10-11
- Posts: 173
Identity
Develop the identity for sin 2A using the identity sin(A + B)
http://www.mathwords.com/t/trig_identities.htm
use this formula
sin 2x = 2sinx cos x
or use this formula
sin(x+y) = sin x cos y + cos x + sin y
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#2 2006-12-06 04:59:36
- Neha
- Member
- Registered: 2006-10-11
- Posts: 173
Re: Identity
neva mind guys i got it
sin(A + B) = sinA cosB + cos A + B
sin(A + A) = sinA cosA + cosA sinA
sin 2A = 2 sinA cosA
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